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  • RakeshM21 commented on jimmypat's instructable Biosand Filter9 months ago
    Biosand Filter

    Sir can i get more information regarding how to build that bio layer in the filter. I am constructing this bio sand water filter for my project but i dont know how to create this bio layer or what are the good bacteria's present in the bio layer.Thanks in advanceRegard'sRakesh G

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